Frequently Asked Questions

What is the first thing to check when the check engine light comes on?

• Confirm the gas cap is tight and undamaged; a loose cap is a common EVAP fault that triggers the light.
• Note any driveability changes (stalling, rough idle, loss of power) and record recent fuel or service events.
• Check simple items you can safely inspect: oil level, coolant level, and visible leaks beneath the vehicle.
• If symptoms are minor, schedule a certified diagnostic — repairs covered under warranty must be done at a certified dealership.
• For immediate peace of mind and long-term savings, have our factory-trained technicians verify and repair the issue correctly.

How much does a check engine light diagnostic cost for a 2014 Toyota Prius v?

• Diagnostic scan fees vary; typical dealer diagnosis ranges from a low flat fee to a modest hourly charge depending on complexity.
• Our dealership often costs less than independent shops while delivering factory-grade diagnostics and warranty protection.
• Choosing Nalley Toyota of Roswell provides immediate savings through accurate identification and long-term savings by preventing misdiagnosed repairs.
• Any warranty-covered repairs must be performed at a certified dealership to preserve coverage and ensure proper parts and procedures.
• We’ll provide a clear estimate before any work so you can compare true lifetime cost, not just a short-term price.

How long does a check engine light service take?

• Simple diagnostics with an OBD-II scan can be completed in about 30–60 minutes; repairs add time depending on parts and labor.
• Minor fixes like replacing sensors or tightening the gas cap are usually same-day services.
• Complex issues (catalytic converter, engine misfire, hybrid-specific systems) may require extended diagnosis and parts and can take a day or more.
• Our certified technicians use efficient dealer tools and genuine parts to minimize downtime and provide long-term reliability.
• We’ll communicate timelines up front and prioritize warranty-covered work performed at our dealership for continued coverage.

What does it mean when the check engine light comes on in a 2014 Toyota Prius v?

• It signals the vehicle’s onboard computer has logged a fault in emissions, engine, or hybrid systems — codes guide the repair.
• Common causes include an EVAP leak, oxygen sensor failure, catalytic converter efficiency issues, or engine misfires.
• Some faults are minor and won’t affect immediate drivability; others can reduce fuel economy or damage components if unchecked.
• Dealer diagnosis pinpoints the exact code and recommended repair, preserving warranty eligibility and ensuring proper parts.
• Addressing the issue promptly with our factory-trained team prevents escalation and delivers the best total cost of ownership.

What is the most common reason for check engine light on a 2014 Toyota Prius v?

• A loose or faulty gas cap and EVAP system leaks are among the most frequent triggers on this model.
• Other common issues include oxygen sensor degradation, catalytic converter inefficiency, and occasional misfires.
• Ignoring these can lead to failed emissions tests, poorer fuel economy, and higher repair bills down the road.
• Our dealership diagnosis quickly confirms whether it’s a small fix or something requiring deeper repair by certified technicians.
• Because warranty-covered items must be repaired at a certified dealership, choosing us protects both performance and value.